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HMAC Generator

Create an HMAC, which proves that a message came from someone holding a secret key and has not been altered.

How it works Report a problem

HMAC Generator

Generate secure HMAC hashes (SHA256, SHA512) with a secret key.

Input Data
Secret Key
Algorithm

About the HMAC Generator

Create an HMAC, which proves that a message came from someone holding a secret key and has not been altered.

How to use the HMAC Generator

  1. Enter the message and your secret key.
  2. Choose an algorithm: SHA-256, SHA-384, SHA-512 or SHA-1.
  3. Press Process Now and copy the result.

Tips

  • Prefer SHA-256 or stronger.
  • Never paste a real production secret into any online tool. Use test keys.

Frequently asked questions

What is the difference between a hash and an HMAC?
An HMAC uses a secret key, so only someone with the key can create or check it.